db4ca4f0b84685906ebabc8d9423d184aa8e306a
[sfrench/cifs-2.6.git] / drivers / net / tokenring / olympic.c
1 /*
2  *   olympic.c (c) 1999 Peter De Schrijver All Rights Reserved
3  *                 1999/2000 Mike Phillips (mikep@linuxtr.net)
4  *
5  *  Linux driver for IBM PCI tokenring cards based on the Pit/Pit-Phy/Olympic
6  *  chipset. 
7  *
8  *  Base Driver Skeleton:
9  *      Written 1993-94 by Donald Becker.
10  *
11  *      Copyright 1993 United States Government as represented by the
12  *      Director, National Security Agency.
13  *
14  *  Thanks to Erik De Cock, Adrian Bridgett and Frank Fiene for their 
15  *  assistance and perserverance with the testing of this driver.
16  *
17  *  This software may be used and distributed according to the terms
18  *  of the GNU General Public License, incorporated herein by reference.
19  * 
20  *  4/27/99 - Alpha Release 0.1.0
21  *            First release to the public
22  *
23  *  6/8/99  - Official Release 0.2.0   
24  *            Merged into the kernel code 
25  *  8/18/99 - Updated driver for 2.3.13 kernel to use new pci
26  *            resource. Driver also reports the card name returned by
27  *            the pci resource.
28  *  1/11/00 - Added spinlocks for smp
29  *  2/23/00 - Updated to dev_kfree_irq 
30  *  3/10/00 - Fixed FDX enable which triggered other bugs also 
31  *            squashed.
32  *  5/20/00 - Changes to handle Olympic on LinuxPPC. Endian changes.
33  *            The odd thing about the changes is that the fix for
34  *            endian issues with the big-endian data in the arb, asb...
35  *            was to always swab() the bytes, no matter what CPU.
36  *            That's because the read[wl]() functions always swap the
37  *            bytes on the way in on PPC.
38  *            Fixing the hardware descriptors was another matter,
39  *            because they weren't going through read[wl](), there all
40  *            the results had to be in memory in le32 values. kdaaker
41  *
42  * 12/23/00 - Added minimal Cardbus support (Thanks Donald).
43  *
44  * 03/09/01 - Add new pci api, dev_base_lock, general clean up. 
45  *
46  * 03/27/01 - Add new dma pci (Thanks to Kyle Lucke) and alloc_trdev
47  *            Change proc_fs behaviour, now one entry per adapter.
48  *
49  * 04/09/01 - Couple of bug fixes to the dma unmaps and ejecting the
50  *            adapter when live does not take the system down with it.
51  * 
52  * 06/02/01 - Clean up, copy skb for small packets
53  * 
54  * 06/22/01 - Add EISR error handling routines 
55  *
56  * 07/19/01 - Improve bad LAA reporting, strip out freemem
57  *            into a separate function, its called from 3 
58  *            different places now. 
59  * 02/09/02 - Replaced sleep_on. 
60  * 03/01/02 - Replace access to several registers from 32 bit to 
61  *            16 bit. Fixes alignment errors on PPC 64 bit machines.
62  *            Thanks to Al Trautman for this one.
63  * 03/10/02 - Fix BUG in arb_cmd. Bug was there all along but was
64  *            silently ignored until the error checking code 
65  *            went into version 1.0.0 
66  * 06/04/02 - Add correct start up sequence for the cardbus adapters.
67  *            Required for strict compliance with pci power mgmt specs.
68  *  To Do:
69  *
70  *           Wake on lan        
71  * 
72  *  If Problems do Occur
73  *  Most problems can be rectified by either closing and opening the interface
74  *  (ifconfig down and up) or rmmod and insmod'ing the driver (a bit difficult
75  *  if compiled into the kernel).
76  */
77
78 /* Change OLYMPIC_DEBUG to 1 to get verbose, and I mean really verbose, messages */
79
80 #define OLYMPIC_DEBUG 0
81
82
83 #include <linux/module.h>
84 #include <linux/kernel.h>
85 #include <linux/errno.h>
86 #include <linux/timer.h>
87 #include <linux/in.h>
88 #include <linux/ioport.h>
89 #include <linux/string.h>
90 #include <linux/proc_fs.h>
91 #include <linux/ptrace.h>
92 #include <linux/skbuff.h>
93 #include <linux/interrupt.h>
94 #include <linux/delay.h>
95 #include <linux/netdevice.h>
96 #include <linux/trdevice.h>
97 #include <linux/stddef.h>
98 #include <linux/init.h>
99 #include <linux/pci.h>
100 #include <linux/spinlock.h>
101 #include <linux/bitops.h>
102 #include <linux/jiffies.h>
103
104 #include <net/checksum.h>
105 #include <net/net_namespace.h>
106
107 #include <asm/io.h>
108 #include <asm/system.h>
109
110 #include "olympic.h"
111
112 /* I've got to put some intelligence into the version number so that Peter and I know
113  * which version of the code somebody has got. 
114  * Version Number = a.b.c.d  where a.b.c is the level of code and d is the latest author.
115  * So 0.0.1.pds = Peter, 0.0.1.mlp = Mike
116  * 
117  * Official releases will only have an a.b.c version number format. 
118  */
119
120 static char version[] =
121 "Olympic.c v1.0.5 6/04/02 - Peter De Schrijver & Mike Phillips" ; 
122
123 static char *open_maj_error[]  = {"No error", "Lobe Media Test", "Physical Insertion",
124                                    "Address Verification", "Neighbor Notification (Ring Poll)",
125                                    "Request Parameters","FDX Registration Request",
126                                    "FDX Duplicate Address Check", "Station registration Query Wait",
127                                    "Unknown stage"};
128
129 static char *open_min_error[] = {"No error", "Function Failure", "Signal Lost", "Wire Fault",
130                                    "Ring Speed Mismatch", "Timeout","Ring Failure","Ring Beaconing",
131                                    "Duplicate Node Address","Request Parameters","Remove Received",
132                                    "Reserved", "Reserved", "No Monitor Detected for RPL", 
133                                    "Monitor Contention failer for RPL", "FDX Protocol Error"};
134
135 /* Module paramters */
136
137 MODULE_AUTHOR("Mike Phillips <mikep@linuxtr.net>") ; 
138 MODULE_DESCRIPTION("Olympic PCI/Cardbus Chipset Driver") ; 
139
140 /* Ring Speed 0,4,16,100 
141  * 0 = Autosense         
142  * 4,16 = Selected speed only, no autosense
143  * This allows the card to be the first on the ring
144  * and become the active monitor.
145  * 100 = Nothing at present, 100mbps is autodetected
146  * if FDX is turned on. May be implemented in the future to 
147  * fail if 100mpbs is not detected.
148  *
149  * WARNING: Some hubs will allow you to insert
150  * at the wrong speed
151  */
152
153 static int ringspeed[OLYMPIC_MAX_ADAPTERS] = {0,} ;
154 module_param_array(ringspeed, int, NULL, 0);
155
156 /* Packet buffer size */
157
158 static int pkt_buf_sz[OLYMPIC_MAX_ADAPTERS] = {0,} ;
159 module_param_array(pkt_buf_sz, int, NULL, 0) ;
160
161 /* Message Level */
162
163 static int message_level[OLYMPIC_MAX_ADAPTERS] = {0,} ; 
164 module_param_array(message_level, int, NULL, 0) ;
165
166 /* Change network_monitor to receive mac frames through the arb channel.
167  * Will also create a /proc/net/olympic_tr%d entry, where %d is the tr
168  * device, i.e. tr0, tr1 etc. 
169  * Intended to be used to create a ring-error reporting network module 
170  * i.e. it will give you the source address of beaconers on the ring 
171  */
172 static int network_monitor[OLYMPIC_MAX_ADAPTERS] = {0,};
173 module_param_array(network_monitor, int, NULL, 0);
174
175 static struct pci_device_id olympic_pci_tbl[] = {
176         {PCI_VENDOR_ID_IBM,PCI_DEVICE_ID_IBM_TR_WAKE,PCI_ANY_ID,PCI_ANY_ID,},
177         { }     /* Terminating Entry */
178 };
179 MODULE_DEVICE_TABLE(pci,olympic_pci_tbl) ; 
180
181
182 static int olympic_probe(struct pci_dev *pdev, const struct pci_device_id *ent); 
183 static int olympic_init(struct net_device *dev);
184 static int olympic_open(struct net_device *dev);
185 static int olympic_xmit(struct sk_buff *skb, struct net_device *dev);
186 static int olympic_close(struct net_device *dev);
187 static void olympic_set_rx_mode(struct net_device *dev);
188 static void olympic_freemem(struct net_device *dev) ;  
189 static irqreturn_t olympic_interrupt(int irq, void *dev_id);
190 static struct net_device_stats * olympic_get_stats(struct net_device *dev);
191 static int olympic_set_mac_address(struct net_device *dev, void *addr) ; 
192 static void olympic_arb_cmd(struct net_device *dev);
193 static int olympic_change_mtu(struct net_device *dev, int mtu);
194 static void olympic_srb_bh(struct net_device *dev) ; 
195 static void olympic_asb_bh(struct net_device *dev) ; 
196 static int olympic_proc_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data) ; 
197
198 static int __devinit olympic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
199 {
200         struct net_device *dev ; 
201         struct olympic_private *olympic_priv;
202         static int card_no = -1 ;
203         int i ; 
204
205         card_no++ ; 
206
207         if ((i = pci_enable_device(pdev))) {
208                 return i ; 
209         }
210
211         pci_set_master(pdev);
212
213         if ((i = pci_request_regions(pdev,"olympic"))) { 
214                 goto op_disable_dev;
215         }
216  
217         dev = alloc_trdev(sizeof(struct olympic_private)) ; 
218         if (!dev) {
219                 i = -ENOMEM; 
220                 goto op_release_dev;
221         }
222
223         olympic_priv = netdev_priv(dev) ;
224         
225         spin_lock_init(&olympic_priv->olympic_lock) ; 
226
227         init_waitqueue_head(&olympic_priv->srb_wait);
228         init_waitqueue_head(&olympic_priv->trb_wait);
229 #if OLYMPIC_DEBUG  
230         printk(KERN_INFO "pci_device: %p, dev:%p, dev->priv: %p\n", pdev, dev, netdev_priv(dev));
231 #endif
232         dev->irq=pdev->irq;
233         dev->base_addr=pci_resource_start(pdev, 0);
234         olympic_priv->olympic_card_name = pci_name(pdev);
235         olympic_priv->pdev = pdev; 
236         olympic_priv->olympic_mmio = ioremap(pci_resource_start(pdev,1),256);
237         olympic_priv->olympic_lap = ioremap(pci_resource_start(pdev,2),2048);
238         if (!olympic_priv->olympic_mmio || !olympic_priv->olympic_lap) {
239                 goto op_free_iomap;
240         }
241                                 
242         if ((pkt_buf_sz[card_no] < 100) || (pkt_buf_sz[card_no] > 18000) )
243                 olympic_priv->pkt_buf_sz = PKT_BUF_SZ ; 
244         else
245                 olympic_priv->pkt_buf_sz = pkt_buf_sz[card_no] ; 
246
247         dev->mtu = olympic_priv->pkt_buf_sz - TR_HLEN ; 
248         olympic_priv->olympic_ring_speed = ringspeed[card_no] ; 
249         olympic_priv->olympic_message_level = message_level[card_no] ; 
250         olympic_priv->olympic_network_monitor = network_monitor[card_no];
251         
252         if ((i = olympic_init(dev))) {
253                 goto op_free_iomap;
254         }                               
255
256         dev->open=&olympic_open;
257         dev->hard_start_xmit=&olympic_xmit;
258         dev->change_mtu=&olympic_change_mtu;
259         dev->stop=&olympic_close;
260         dev->do_ioctl=NULL;
261         dev->set_multicast_list=&olympic_set_rx_mode;
262         dev->get_stats=&olympic_get_stats ;
263         dev->set_mac_address=&olympic_set_mac_address ;  
264         SET_NETDEV_DEV(dev, &pdev->dev);
265
266         pci_set_drvdata(pdev,dev) ; 
267         register_netdev(dev) ; 
268         printk("Olympic: %s registered as: %s\n",olympic_priv->olympic_card_name,dev->name);
269         if (olympic_priv->olympic_network_monitor) { /* Must go after register_netdev as we need the device name */ 
270                 char proc_name[20] ; 
271                 strcpy(proc_name,"olympic_") ;
272                 strcat(proc_name,dev->name) ; 
273                 create_proc_read_entry(proc_name,0,init_net.proc_net,olympic_proc_info,(void *)dev) ;
274                 printk("Olympic: Network Monitor information: /proc/%s\n",proc_name); 
275         }
276         return  0 ;
277
278 op_free_iomap:
279         if (olympic_priv->olympic_mmio)
280                 iounmap(olympic_priv->olympic_mmio); 
281         if (olympic_priv->olympic_lap)
282                 iounmap(olympic_priv->olympic_lap);
283
284         free_netdev(dev);
285 op_release_dev:
286         pci_release_regions(pdev); 
287
288 op_disable_dev:
289         pci_disable_device(pdev);
290         return i;
291 }
292
293 static int olympic_init(struct net_device *dev)
294 {
295         struct olympic_private *olympic_priv;
296         u8 __iomem *olympic_mmio, *init_srb,*adapter_addr;
297         unsigned long t; 
298         unsigned int uaa_addr;
299
300         olympic_priv=netdev_priv(dev);
301         olympic_mmio=olympic_priv->olympic_mmio;
302
303         printk("%s \n", version);
304         printk("%s. I/O at %hx, MMIO at %p, LAP at %p, using irq %d\n", olympic_priv->olympic_card_name, (unsigned int) dev->base_addr,olympic_priv->olympic_mmio, olympic_priv->olympic_lap, dev->irq);
305
306         writel(readl(olympic_mmio+BCTL) | BCTL_SOFTRESET,olympic_mmio+BCTL);
307         t=jiffies;
308         while((readl(olympic_mmio+BCTL)) & BCTL_SOFTRESET) {
309                 schedule();             
310                 if(time_after(jiffies, t + 40*HZ)) {
311                         printk(KERN_ERR "IBM PCI tokenring card not responding.\n");
312                         return -ENODEV;
313                 }
314         }
315
316
317         /* Needed for cardbus */
318         if(!(readl(olympic_mmio+BCTL) & BCTL_MODE_INDICATOR)) {
319                 writel(readl(olympic_priv->olympic_mmio+FERMASK)|FERMASK_INT_BIT, olympic_mmio+FERMASK);
320         }
321         
322 #if OLYMPIC_DEBUG
323         printk("BCTL: %x\n",readl(olympic_mmio+BCTL));
324         printk("GPR: %x\n",readw(olympic_mmio+GPR));
325         printk("SISRMASK: %x\n",readl(olympic_mmio+SISR_MASK));
326 #endif
327         /* Aaaahhh, You have got to be real careful setting GPR, the card
328            holds the previous values from flash memory, including autosense 
329            and ring speed */
330
331         writel(readl(olympic_mmio+BCTL)|BCTL_MIMREB,olympic_mmio+BCTL);
332         
333         if (olympic_priv->olympic_ring_speed  == 0) { /* Autosense */
334                 writew(readw(olympic_mmio+GPR)|GPR_AUTOSENSE,olympic_mmio+GPR);
335                 if (olympic_priv->olympic_message_level) 
336                         printk(KERN_INFO "%s: Ringspeed autosense mode on\n",olympic_priv->olympic_card_name);
337         } else if (olympic_priv->olympic_ring_speed == 16) {
338                 if (olympic_priv->olympic_message_level) 
339                         printk(KERN_INFO "%s: Trying to open at 16 Mbps as requested\n", olympic_priv->olympic_card_name);
340                 writew(GPR_16MBPS, olympic_mmio+GPR);
341         } else if (olympic_priv->olympic_ring_speed == 4) {
342                 if (olympic_priv->olympic_message_level) 
343                         printk(KERN_INFO "%s: Trying to open at 4 Mbps as requested\n", olympic_priv->olympic_card_name) ; 
344                 writew(0, olympic_mmio+GPR);
345         } 
346         
347         writew(readw(olympic_mmio+GPR)|GPR_NEPTUNE_BF,olympic_mmio+GPR);
348
349 #if OLYMPIC_DEBUG
350         printk("GPR = %x\n",readw(olympic_mmio + GPR) ) ; 
351 #endif
352         /* Solo has been paused to meet the Cardbus power
353          * specs if the adapter is cardbus. Check to 
354          * see its been paused and then restart solo. The
355          * adapter should set the pause bit within 1 second.
356          */
357
358         if(!(readl(olympic_mmio+BCTL) & BCTL_MODE_INDICATOR)) { 
359                 t=jiffies;
360                 while (!(readl(olympic_mmio+CLKCTL) & CLKCTL_PAUSE)) {
361                         schedule() ; 
362                         if(time_after(jiffies, t + 2*HZ)) {
363                                 printk(KERN_ERR "IBM Cardbus tokenring adapter not responsing.\n") ; 
364                                 return -ENODEV;
365                         }
366                 }
367                 writel(readl(olympic_mmio+CLKCTL) & ~CLKCTL_PAUSE, olympic_mmio+CLKCTL) ; 
368         }
369         
370         /* start solo init */
371         writel((1<<15),olympic_mmio+SISR_MASK_SUM);
372
373         t=jiffies;
374         while(!((readl(olympic_mmio+SISR_RR)) & SISR_SRB_REPLY)) {
375                 schedule();             
376                 if(time_after(jiffies, t + 15*HZ)) {
377                         printk(KERN_ERR "IBM PCI tokenring card not responding.\n");
378                         return -ENODEV;
379                 }
380         }
381         
382         writel(readw(olympic_mmio+LAPWWO),olympic_mmio+LAPA);
383
384 #if OLYMPIC_DEBUG
385         printk("LAPWWO: %x, LAPA: %x\n",readl(olympic_mmio+LAPWWO), readl(olympic_mmio+LAPA));
386 #endif
387
388         init_srb=olympic_priv->olympic_lap + ((readw(olympic_mmio+LAPWWO)) & (~0xf800));
389
390 #if OLYMPIC_DEBUG               
391 {
392         int i;
393         printk("init_srb(%p): ",init_srb);
394         for(i=0;i<20;i++)
395                 printk("%x ",readb(init_srb+i));
396         printk("\n");
397 }
398 #endif  
399         if(readw(init_srb+6)) {
400                 printk(KERN_INFO "tokenring card initialization failed. errorcode : %x\n",readw(init_srb+6));
401                 return -ENODEV;
402         }
403
404         if (olympic_priv->olympic_message_level) {
405                 if ( readb(init_srb +2) & 0x40) { 
406                         printk(KERN_INFO "Olympic: Adapter is FDX capable.\n") ;
407                 } else { 
408                         printk(KERN_INFO "Olympic: Adapter cannot do FDX.\n");
409                 }
410         }
411   
412         uaa_addr=swab16(readw(init_srb+8));
413
414 #if OLYMPIC_DEBUG
415         printk("UAA resides at %x\n",uaa_addr);
416 #endif
417
418         writel(uaa_addr,olympic_mmio+LAPA);
419         adapter_addr=olympic_priv->olympic_lap + (uaa_addr & (~0xf800));
420
421         memcpy_fromio(&dev->dev_addr[0], adapter_addr,6);
422
423 #if OLYMPIC_DEBUG
424  {
425         DECLARE_MAC_BUF(mac);
426         printk("adapter address: %s\n", print_mac(mac, dev->dev_addr));
427  }
428 #endif
429
430         olympic_priv->olympic_addr_table_addr = swab16(readw(init_srb + 12)); 
431         olympic_priv->olympic_parms_addr = swab16(readw(init_srb + 14)); 
432
433         return 0;
434
435 }
436
437 static int olympic_open(struct net_device *dev)
438 {
439         struct olympic_private *olympic_priv=netdev_priv(dev);
440         u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio,*init_srb;
441         unsigned long flags, t;
442         int i, open_finished = 1 ;
443         u8 resp, err;
444         DECLARE_MAC_BUF(mac);
445
446         DECLARE_WAITQUEUE(wait,current) ; 
447
448         olympic_init(dev);
449
450         if(request_irq(dev->irq, &olympic_interrupt, IRQF_SHARED , "olympic", dev)) {
451                 return -EAGAIN;
452         }
453
454 #if OLYMPIC_DEBUG
455         printk("BMCTL: %x\n",readl(olympic_mmio+BMCTL_SUM));
456         printk("pending ints: %x\n",readl(olympic_mmio+SISR_RR));
457 #endif
458
459         writel(SISR_MI,olympic_mmio+SISR_MASK_SUM);
460
461         writel(SISR_MI | SISR_SRB_REPLY, olympic_mmio+SISR_MASK); /* more ints later, doesn't stop arb cmd interrupt */
462
463         writel(LISR_LIE,olympic_mmio+LISR); /* more ints later */
464
465         /* adapter is closed, so SRB is pointed to by LAPWWO */
466
467         writel(readw(olympic_mmio+LAPWWO),olympic_mmio+LAPA);
468         init_srb=olympic_priv->olympic_lap + ((readw(olympic_mmio+LAPWWO)) & (~0xf800));
469         
470 #if OLYMPIC_DEBUG
471         printk("LAPWWO: %x, LAPA: %x\n",readw(olympic_mmio+LAPWWO), readl(olympic_mmio+LAPA));
472         printk("SISR Mask = %04x\n", readl(olympic_mmio+SISR_MASK));
473         printk("Before the open command \n");
474 #endif  
475         do {
476                 memset_io(init_srb,0,SRB_COMMAND_SIZE);
477
478                 writeb(SRB_OPEN_ADAPTER,init_srb) ;     /* open */
479                 writeb(OLYMPIC_CLEAR_RET_CODE,init_srb+2);
480
481                 /* If Network Monitor, instruct card to copy MAC frames through the ARB */
482                 if (olympic_priv->olympic_network_monitor) 
483                         writew(swab16(OPEN_ADAPTER_ENABLE_FDX | OPEN_ADAPTER_PASS_ADC_MAC | OPEN_ADAPTER_PASS_ATT_MAC | OPEN_ADAPTER_PASS_BEACON), init_srb+8);
484                 else
485                         writew(swab16(OPEN_ADAPTER_ENABLE_FDX), init_srb+8);
486         
487                 /* Test OR of first 3 bytes as its totally possible for 
488                  * someone to set the first 2 bytes to be zero, although this 
489                  * is an error, the first byte must have bit 6 set to 1  */
490
491                 if (olympic_priv->olympic_laa[0] | olympic_priv->olympic_laa[1] | olympic_priv->olympic_laa[2]) {
492                         writeb(olympic_priv->olympic_laa[0],init_srb+12);
493                         writeb(olympic_priv->olympic_laa[1],init_srb+13);
494                         writeb(olympic_priv->olympic_laa[2],init_srb+14);
495                         writeb(olympic_priv->olympic_laa[3],init_srb+15);
496                         writeb(olympic_priv->olympic_laa[4],init_srb+16);
497                         writeb(olympic_priv->olympic_laa[5],init_srb+17);
498                         memcpy(dev->dev_addr,olympic_priv->olympic_laa,dev->addr_len) ;  
499                 }       
500                 writeb(1,init_srb+30);
501
502                 spin_lock_irqsave(&olympic_priv->olympic_lock,flags);   
503                 olympic_priv->srb_queued=1;
504
505                 writel(LISR_SRB_CMD,olympic_mmio+LISR_SUM);
506                 spin_unlock_irqrestore(&olympic_priv->olympic_lock,flags);
507
508                 t = jiffies ; 
509         
510                 add_wait_queue(&olympic_priv->srb_wait,&wait) ;
511                 set_current_state(TASK_INTERRUPTIBLE) ; 
512  
513                 while(olympic_priv->srb_queued) {        
514                         schedule() ; 
515                         if(signal_pending(current))     {            
516                                 printk(KERN_WARNING "%s: Signal received in open.\n",
517                                         dev->name);
518                                 printk(KERN_WARNING "SISR=%x LISR=%x\n",
519                                         readl(olympic_mmio+SISR),
520                                         readl(olympic_mmio+LISR));
521                                 olympic_priv->srb_queued=0;
522                                 break;
523                         }
524                         if (time_after(jiffies, t + 10*HZ)) {
525                                 printk(KERN_WARNING "%s: SRB timed out. \n",dev->name) ; 
526                                 olympic_priv->srb_queued=0;
527                                 break ; 
528                         } 
529                         set_current_state(TASK_INTERRUPTIBLE) ; 
530                 }
531                 remove_wait_queue(&olympic_priv->srb_wait,&wait) ; 
532                 set_current_state(TASK_RUNNING) ; 
533                 olympic_priv->srb_queued = 0 ; 
534 #if OLYMPIC_DEBUG
535                 printk("init_srb(%p): ",init_srb);
536                 for(i=0;i<20;i++)
537                         printk("%02x ",readb(init_srb+i));
538                 printk("\n");
539 #endif
540                 
541                 /* If we get the same return response as we set, the interrupt wasn't raised and the open
542                  * timed out.
543                  */
544
545                 switch (resp = readb(init_srb+2)) {
546                 case OLYMPIC_CLEAR_RET_CODE:
547                         printk(KERN_WARNING "%s: Adapter Open time out or error.\n", dev->name) ; 
548                         goto out;
549                 case 0:
550                         open_finished = 1;
551                         break;
552                 case 0x07:
553                         if (!olympic_priv->olympic_ring_speed && open_finished) { /* Autosense , first time around */
554                                 printk(KERN_WARNING "%s: Retrying at different ring speed \n", dev->name); 
555                                 open_finished = 0 ;  
556                                 continue;
557                         }
558
559                         err = readb(init_srb+7);
560
561                         if (!olympic_priv->olympic_ring_speed && ((err & 0x0f) == 0x0d)) { 
562                                 printk(KERN_WARNING "%s: Tried to autosense ring speed with no monitors present\n",dev->name);
563                                 printk(KERN_WARNING "%s: Please try again with a specified ring speed \n",dev->name);
564                         } else {
565                                 printk(KERN_WARNING "%s: %s - %s\n", dev->name,
566                                         open_maj_error[(err & 0xf0) >> 4],
567                                         open_min_error[(err & 0x0f)]);
568                         }
569                         goto out;
570
571                 case 0x32:
572                         printk(KERN_WARNING "%s: Invalid LAA: %s\n",
573                                dev->name, print_mac(mac, olympic_priv->olympic_laa));
574                         goto out;
575
576                 default:
577                         printk(KERN_WARNING "%s: Bad OPEN response: %x\n", dev->name, resp);
578                         goto out;
579
580                 }
581         } while (!(open_finished)) ; /* Will only loop if ring speed mismatch re-open attempted && autosense is on */   
582
583         if (readb(init_srb+18) & (1<<3)) 
584                 if (olympic_priv->olympic_message_level) 
585                         printk(KERN_INFO "%s: Opened in FDX Mode\n",dev->name);
586
587         if (readb(init_srb+18) & (1<<1))
588                 olympic_priv->olympic_ring_speed = 100 ; 
589         else if (readb(init_srb+18) & 1)
590                 olympic_priv->olympic_ring_speed = 16 ; 
591         else
592                 olympic_priv->olympic_ring_speed = 4 ; 
593
594         if (olympic_priv->olympic_message_level) 
595                 printk(KERN_INFO "%s: Opened in %d Mbps mode\n",dev->name, olympic_priv->olympic_ring_speed);
596
597         olympic_priv->asb = swab16(readw(init_srb+8));
598         olympic_priv->srb = swab16(readw(init_srb+10));
599         olympic_priv->arb = swab16(readw(init_srb+12));
600         olympic_priv->trb = swab16(readw(init_srb+16));
601
602         olympic_priv->olympic_receive_options = 0x01 ; 
603         olympic_priv->olympic_copy_all_options = 0 ; 
604         
605         /* setup rx ring */
606         
607         writel((3<<16),olympic_mmio+BMCTL_RWM); /* Ensure end of frame generated interrupts */ 
608
609         writel(BMCTL_RX_DIS|3,olympic_mmio+BMCTL_RWM); /* Yes, this the enables RX channel */
610
611         for(i=0;i<OLYMPIC_RX_RING_SIZE;i++) {
612
613                 struct sk_buff *skb;
614                 
615                 skb=dev_alloc_skb(olympic_priv->pkt_buf_sz);
616                 if(skb == NULL)
617                         break;
618
619                 skb->dev = dev;
620
621                 olympic_priv->olympic_rx_ring[i].buffer = cpu_to_le32(pci_map_single(olympic_priv->pdev, 
622                                                           skb->data,olympic_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE)) ; 
623                 olympic_priv->olympic_rx_ring[i].res_length = cpu_to_le32(olympic_priv->pkt_buf_sz); 
624                 olympic_priv->rx_ring_skb[i]=skb;
625         }
626
627         if (i==0) {
628                 printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers. Adapter disabled\n",dev->name);
629                 goto out;
630         }
631
632         olympic_priv->rx_ring_dma_addr = pci_map_single(olympic_priv->pdev,olympic_priv->olympic_rx_ring, 
633                                          sizeof(struct olympic_rx_desc) * OLYMPIC_RX_RING_SIZE, PCI_DMA_TODEVICE);
634         writel(olympic_priv->rx_ring_dma_addr, olympic_mmio+RXDESCQ);
635         writel(olympic_priv->rx_ring_dma_addr, olympic_mmio+RXCDA);
636         writew(i, olympic_mmio+RXDESCQCNT);
637                 
638         olympic_priv->rx_status_ring_dma_addr = pci_map_single(olympic_priv->pdev, olympic_priv->olympic_rx_status_ring, 
639                                                 sizeof(struct olympic_rx_status) * OLYMPIC_RX_RING_SIZE, PCI_DMA_FROMDEVICE);
640         writel(olympic_priv->rx_status_ring_dma_addr, olympic_mmio+RXSTATQ);
641         writel(olympic_priv->rx_status_ring_dma_addr, olympic_mmio+RXCSA);
642         
643         olympic_priv->rx_ring_last_received = OLYMPIC_RX_RING_SIZE - 1; /* last processed rx status */
644         olympic_priv->rx_status_last_received = OLYMPIC_RX_RING_SIZE - 1;  
645
646         writew(i, olympic_mmio+RXSTATQCNT);
647
648 #if OLYMPIC_DEBUG 
649         printk("# of rx buffers: %d, RXENQ: %x\n",i, readw(olympic_mmio+RXENQ));
650         printk("RXCSA: %x, rx_status_ring[0]: %p\n",readl(olympic_mmio+RXCSA),&olympic_priv->olympic_rx_status_ring[0]);
651         printk(" stat_ring[1]: %p, stat_ring[2]: %p, stat_ring[3]: %p\n", &(olympic_priv->olympic_rx_status_ring[1]), &(olympic_priv->olympic_rx_status_ring[2]), &(olympic_priv->olympic_rx_status_ring[3]) );
652         printk(" stat_ring[4]: %p, stat_ring[5]: %p, stat_ring[6]: %p\n", &(olympic_priv->olympic_rx_status_ring[4]), &(olympic_priv->olympic_rx_status_ring[5]), &(olympic_priv->olympic_rx_status_ring[6]) );
653         printk(" stat_ring[7]: %p\n", &(olympic_priv->olympic_rx_status_ring[7])  );
654
655         printk("RXCDA: %x, rx_ring[0]: %p\n",readl(olympic_mmio+RXCDA),&olympic_priv->olympic_rx_ring[0]);
656         printk("Rx_ring_dma_addr = %08x, rx_status_dma_addr = %08x\n",
657                 olympic_priv->rx_ring_dma_addr,olympic_priv->rx_status_ring_dma_addr) ; 
658 #endif
659
660         writew((((readw(olympic_mmio+RXENQ)) & 0x8000) ^ 0x8000) | i,olympic_mmio+RXENQ);
661
662 #if OLYMPIC_DEBUG 
663         printk("# of rx buffers: %d, RXENQ: %x\n",i, readw(olympic_mmio+RXENQ));
664         printk("RXCSA: %x, rx_ring[0]: %p\n",readl(olympic_mmio+RXCSA),&olympic_priv->olympic_rx_status_ring[0]);
665         printk("RXCDA: %x, rx_ring[0]: %p\n",readl(olympic_mmio+RXCDA),&olympic_priv->olympic_rx_ring[0]);
666 #endif 
667
668         writel(SISR_RX_STATUS | SISR_RX_NOBUF,olympic_mmio+SISR_MASK_SUM);
669
670         /* setup tx ring */
671
672         writel(BMCTL_TX1_DIS,olympic_mmio+BMCTL_RWM); /* Yes, this enables TX channel 1 */
673         for(i=0;i<OLYMPIC_TX_RING_SIZE;i++) 
674                 olympic_priv->olympic_tx_ring[i].buffer=cpu_to_le32(0xdeadbeef);
675
676         olympic_priv->free_tx_ring_entries=OLYMPIC_TX_RING_SIZE;
677         olympic_priv->tx_ring_dma_addr = pci_map_single(olympic_priv->pdev,olympic_priv->olympic_tx_ring,
678                                          sizeof(struct olympic_tx_desc) * OLYMPIC_TX_RING_SIZE,PCI_DMA_TODEVICE) ; 
679         writel(olympic_priv->tx_ring_dma_addr, olympic_mmio+TXDESCQ_1);
680         writel(olympic_priv->tx_ring_dma_addr, olympic_mmio+TXCDA_1);
681         writew(OLYMPIC_TX_RING_SIZE, olympic_mmio+TXDESCQCNT_1);
682         
683         olympic_priv->tx_status_ring_dma_addr = pci_map_single(olympic_priv->pdev, olympic_priv->olympic_tx_status_ring,
684                                                 sizeof(struct olympic_tx_status) * OLYMPIC_TX_RING_SIZE, PCI_DMA_FROMDEVICE);
685         writel(olympic_priv->tx_status_ring_dma_addr,olympic_mmio+TXSTATQ_1);
686         writel(olympic_priv->tx_status_ring_dma_addr,olympic_mmio+TXCSA_1);
687         writew(OLYMPIC_TX_RING_SIZE,olympic_mmio+TXSTATQCNT_1);
688                 
689         olympic_priv->tx_ring_free=0; /* next entry in tx ring to use */
690         olympic_priv->tx_ring_last_status=OLYMPIC_TX_RING_SIZE-1; /* last processed tx status */
691
692         writel(0xffffffff, olympic_mmio+EISR_RWM) ; /* clean the eisr */
693         writel(0,olympic_mmio+EISR) ; 
694         writel(EISR_MASK_OPTIONS,olympic_mmio+EISR_MASK) ; /* enables most of the TX error interrupts */
695         writel(SISR_TX1_EOF | SISR_ADAPTER_CHECK | SISR_ARB_CMD | SISR_TRB_REPLY | SISR_ASB_FREE | SISR_ERR,olympic_mmio+SISR_MASK_SUM);
696
697 #if OLYMPIC_DEBUG 
698         printk("BMCTL: %x\n",readl(olympic_mmio+BMCTL_SUM));
699         printk("SISR MASK: %x\n",readl(olympic_mmio+SISR_MASK));
700 #endif
701
702         if (olympic_priv->olympic_network_monitor) { 
703                 u8 __iomem *oat;
704                 u8 __iomem *opt;
705                 int i;
706                 u8 addr[6];
707                 DECLARE_MAC_BUF(mac);
708                 oat = (olympic_priv->olympic_lap + olympic_priv->olympic_addr_table_addr);
709                 opt = (olympic_priv->olympic_lap + olympic_priv->olympic_parms_addr);
710
711                 for (i = 0; i < 6; i++)
712                         addr[i] = readb(oat+offsetof(struct olympic_adapter_addr_table,node_addr)+i);
713                 printk("%s: Node Address: %s\n",dev->name, print_mac(mac, addr));
714                 printk("%s: Functional Address: %02x:%02x:%02x:%02x\n",dev->name, 
715                         readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)), 
716                         readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)+1),
717                         readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)+2),
718                         readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)+3));
719
720                 for (i = 0; i < 6; i++)
721                         addr[i] = readb(opt+offsetof(struct olympic_parameters_table, up_node_addr)+i);
722                 printk("%s: NAUN Address: %s\n",dev->name, print_mac(mac, addr));
723         }
724         
725         netif_start_queue(dev);
726         return 0;
727
728 out:
729         free_irq(dev->irq, dev);
730         return -EIO;
731 }       
732
733 /*
734  *      When we enter the rx routine we do not know how many frames have been 
735  *      queued on the rx channel.  Therefore we start at the next rx status
736  *      position and travel around the receive ring until we have completed
737  *      all the frames.
738  *
739  *      This means that we may process the frame before we receive the end
740  *      of frame interrupt. This is why we always test the status instead
741  *      of blindly processing the next frame.
742  *
743  *      We also remove the last 4 bytes from the packet as well, these are
744  *      just token ring trailer info and upset protocols that don't check 
745  *      their own length, i.e. SNA. 
746  *      
747  */
748 static void olympic_rx(struct net_device *dev)
749 {
750         struct olympic_private *olympic_priv=netdev_priv(dev);
751         u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio;
752         struct olympic_rx_status *rx_status;
753         struct olympic_rx_desc *rx_desc ; 
754         int rx_ring_last_received,length, buffer_cnt, cpy_length, frag_len;
755         struct sk_buff *skb, *skb2;
756         int i;
757
758         rx_status=&(olympic_priv->olympic_rx_status_ring[(olympic_priv->rx_status_last_received + 1) & (OLYMPIC_RX_RING_SIZE - 1)]) ; 
759  
760         while (rx_status->status_buffercnt) { 
761                 u32 l_status_buffercnt;
762
763                 olympic_priv->rx_status_last_received++ ;
764                 olympic_priv->rx_status_last_received &= (OLYMPIC_RX_RING_SIZE -1);
765 #if OLYMPIC_DEBUG
766                 printk("rx status: %x rx len: %x \n", le32_to_cpu(rx_status->status_buffercnt), le32_to_cpu(rx_status->fragmentcnt_framelen));
767 #endif
768                 length = le32_to_cpu(rx_status->fragmentcnt_framelen) & 0xffff;
769                 buffer_cnt = le32_to_cpu(rx_status->status_buffercnt) & 0xffff; 
770                 i = buffer_cnt ; /* Need buffer_cnt later for rxenq update */ 
771                 frag_len = le32_to_cpu(rx_status->fragmentcnt_framelen) >> 16; 
772
773 #if OLYMPIC_DEBUG 
774                 printk("length: %x, frag_len: %x, buffer_cnt: %x\n", length, frag_len, buffer_cnt);
775 #endif
776                 l_status_buffercnt = le32_to_cpu(rx_status->status_buffercnt);
777                 if(l_status_buffercnt & 0xC0000000) {
778                         if (l_status_buffercnt & 0x3B000000) {
779                                 if (olympic_priv->olympic_message_level) {
780                                         if (l_status_buffercnt & (1<<29))  /* Rx Frame Truncated */
781                                                 printk(KERN_WARNING "%s: Rx Frame Truncated \n",dev->name);
782                                         if (l_status_buffercnt & (1<<28)) /*Rx receive overrun */
783                                                 printk(KERN_WARNING "%s: Rx Frame Receive overrun \n",dev->name);
784                                         if (l_status_buffercnt & (1<<27)) /* No receive buffers */
785                                                 printk(KERN_WARNING "%s: No receive buffers \n",dev->name);
786                                         if (l_status_buffercnt & (1<<25)) /* Receive frame error detect */
787                                                 printk(KERN_WARNING "%s: Receive frame error detect \n",dev->name);
788                                         if (l_status_buffercnt & (1<<24)) /* Received Error Detect */
789                                                 printk(KERN_WARNING "%s: Received Error Detect \n",dev->name);
790                                 } 
791                                 olympic_priv->rx_ring_last_received += i ; 
792                                 olympic_priv->rx_ring_last_received &= (OLYMPIC_RX_RING_SIZE -1) ; 
793                                 olympic_priv->olympic_stats.rx_errors++;         
794                         } else {        
795                         
796                                 if (buffer_cnt == 1) {
797                                         skb = dev_alloc_skb(max_t(int, olympic_priv->pkt_buf_sz,length)) ; 
798                                 } else {
799                                         skb = dev_alloc_skb(length) ; 
800                                 }
801
802                                 if (skb == NULL) {
803                                         printk(KERN_WARNING "%s: Not enough memory to copy packet to upper layers. \n",dev->name) ;
804                                         olympic_priv->olympic_stats.rx_dropped++ ; 
805                                         /* Update counters even though we don't transfer the frame */
806                                         olympic_priv->rx_ring_last_received += i ; 
807                                         olympic_priv->rx_ring_last_received &= (OLYMPIC_RX_RING_SIZE -1) ;  
808                                 } else  {
809                                         /* Optimise based upon number of buffers used. 
810                                            If only one buffer is used we can simply swap the buffers around.
811                                            If more than one then we must use the new buffer and copy the information
812                                            first. Ideally all frames would be in a single buffer, this can be tuned by
813                                            altering the buffer size. If the length of the packet is less than
814                                            1500 bytes we're going to copy it over anyway to stop packets getting
815                                            dropped from sockets with buffers smaller than our pkt_buf_sz. */
816                                 
817                                         if (buffer_cnt==1) {
818                                                 olympic_priv->rx_ring_last_received++ ; 
819                                                 olympic_priv->rx_ring_last_received &= (OLYMPIC_RX_RING_SIZE -1);
820                                                 rx_ring_last_received = olympic_priv->rx_ring_last_received ;
821                                                 if (length > 1500) { 
822                                                         skb2=olympic_priv->rx_ring_skb[rx_ring_last_received] ; 
823                                                         /* unmap buffer */
824                                                         pci_unmap_single(olympic_priv->pdev,
825                                                                 le32_to_cpu(olympic_priv->olympic_rx_ring[rx_ring_last_received].buffer), 
826                                                                 olympic_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; 
827                                                         skb_put(skb2,length-4);
828                                                         skb2->protocol = tr_type_trans(skb2,dev);
829                                                         olympic_priv->olympic_rx_ring[rx_ring_last_received].buffer = 
830                                                                 cpu_to_le32(pci_map_single(olympic_priv->pdev, skb->data, 
831                                                                 olympic_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE));
832                                                         olympic_priv->olympic_rx_ring[rx_ring_last_received].res_length = 
833                                                                 cpu_to_le32(olympic_priv->pkt_buf_sz); 
834                                                         olympic_priv->rx_ring_skb[rx_ring_last_received] = skb ; 
835                                                         netif_rx(skb2) ; 
836                                                 } else { 
837                                                         pci_dma_sync_single_for_cpu(olympic_priv->pdev,
838                                                                 le32_to_cpu(olympic_priv->olympic_rx_ring[rx_ring_last_received].buffer),
839                                                                 olympic_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; 
840                                                         skb_copy_from_linear_data(olympic_priv->rx_ring_skb[rx_ring_last_received],
841                                                                       skb_put(skb,length - 4),
842                                                                       length - 4);
843                                                         pci_dma_sync_single_for_device(olympic_priv->pdev,
844                                                                 le32_to_cpu(olympic_priv->olympic_rx_ring[rx_ring_last_received].buffer),
845                                                                 olympic_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ;
846                                                         skb->protocol = tr_type_trans(skb,dev) ; 
847                                                         netif_rx(skb) ; 
848                                                 } 
849                                         } else {
850                                                 do { /* Walk the buffers */ 
851                                                         olympic_priv->rx_ring_last_received++ ; 
852                                                         olympic_priv->rx_ring_last_received &= (OLYMPIC_RX_RING_SIZE -1);
853                                                         rx_ring_last_received = olympic_priv->rx_ring_last_received ; 
854                                                         pci_dma_sync_single_for_cpu(olympic_priv->pdev,
855                                                                 le32_to_cpu(olympic_priv->olympic_rx_ring[rx_ring_last_received].buffer),
856                                                                 olympic_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ; 
857                                                         rx_desc = &(olympic_priv->olympic_rx_ring[rx_ring_last_received]);
858                                                         cpy_length = (i == 1 ? frag_len : le32_to_cpu(rx_desc->res_length)); 
859                                                         skb_copy_from_linear_data(olympic_priv->rx_ring_skb[rx_ring_last_received],
860                                                                       skb_put(skb, cpy_length),
861                                                                       cpy_length);
862                                                         pci_dma_sync_single_for_device(olympic_priv->pdev,
863                                                                 le32_to_cpu(olympic_priv->olympic_rx_ring[rx_ring_last_received].buffer),
864                                                                 olympic_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ;
865                                                 } while (--i) ; 
866                                                 skb_trim(skb,skb->len-4) ; 
867                                                 skb->protocol = tr_type_trans(skb,dev);
868                                                 netif_rx(skb) ; 
869                                         } 
870                                         dev->last_rx = jiffies ; 
871                                         olympic_priv->olympic_stats.rx_packets++ ; 
872                                         olympic_priv->olympic_stats.rx_bytes += length ; 
873                                 } /* if skb == null */
874                         } /* If status & 0x3b */
875
876                 } else { /*if buffercnt & 0xC */
877                         olympic_priv->rx_ring_last_received += i ; 
878                         olympic_priv->rx_ring_last_received &= (OLYMPIC_RX_RING_SIZE - 1) ; 
879                 } 
880
881                 rx_status->fragmentcnt_framelen = 0 ; 
882                 rx_status->status_buffercnt = 0 ; 
883                 rx_status = &(olympic_priv->olympic_rx_status_ring[(olympic_priv->rx_status_last_received+1) & (OLYMPIC_RX_RING_SIZE -1) ]);
884
885                 writew((((readw(olympic_mmio+RXENQ)) & 0x8000) ^ 0x8000) |  buffer_cnt , olympic_mmio+RXENQ); 
886         } /* while */
887
888 }
889
890 static void olympic_freemem(struct net_device *dev) 
891
892         struct olympic_private *olympic_priv=netdev_priv(dev);
893         int i;
894                         
895         for(i=0;i<OLYMPIC_RX_RING_SIZE;i++) {
896                 if (olympic_priv->rx_ring_skb[olympic_priv->rx_status_last_received] != NULL) {
897                         dev_kfree_skb_irq(olympic_priv->rx_ring_skb[olympic_priv->rx_status_last_received]);
898                         olympic_priv->rx_ring_skb[olympic_priv->rx_status_last_received] = NULL;
899                 }
900                 if (olympic_priv->olympic_rx_ring[olympic_priv->rx_status_last_received].buffer != cpu_to_le32(0xdeadbeef)) {
901                         pci_unmap_single(olympic_priv->pdev, 
902                         le32_to_cpu(olympic_priv->olympic_rx_ring[olympic_priv->rx_status_last_received].buffer),
903                         olympic_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE);
904                 }
905                 olympic_priv->rx_status_last_received++;
906                 olympic_priv->rx_status_last_received&=OLYMPIC_RX_RING_SIZE-1;
907         }
908         /* unmap rings */
909         pci_unmap_single(olympic_priv->pdev, olympic_priv->rx_status_ring_dma_addr, 
910                 sizeof(struct olympic_rx_status) * OLYMPIC_RX_RING_SIZE, PCI_DMA_FROMDEVICE);
911         pci_unmap_single(olympic_priv->pdev, olympic_priv->rx_ring_dma_addr,
912                 sizeof(struct olympic_rx_desc) * OLYMPIC_RX_RING_SIZE, PCI_DMA_TODEVICE);
913
914         pci_unmap_single(olympic_priv->pdev, olympic_priv->tx_status_ring_dma_addr, 
915                 sizeof(struct olympic_tx_status) * OLYMPIC_TX_RING_SIZE, PCI_DMA_FROMDEVICE);
916         pci_unmap_single(olympic_priv->pdev, olympic_priv->tx_ring_dma_addr, 
917                 sizeof(struct olympic_tx_desc) * OLYMPIC_TX_RING_SIZE, PCI_DMA_TODEVICE);
918
919         return ; 
920 }
921  
922 static irqreturn_t olympic_interrupt(int irq, void *dev_id) 
923 {
924         struct net_device *dev= (struct net_device *)dev_id;
925         struct olympic_private *olympic_priv=netdev_priv(dev);
926         u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio;
927         u32 sisr;
928         u8 __iomem *adapter_check_area ; 
929         
930         /* 
931          *  Read sisr but don't reset it yet. 
932          *  The indication bit may have been set but the interrupt latch
933          *  bit may not be set, so we'd lose the interrupt later. 
934          */ 
935         sisr=readl(olympic_mmio+SISR) ; 
936         if (!(sisr & SISR_MI)) /* Interrupt isn't for us */ 
937                 return IRQ_NONE;
938         sisr=readl(olympic_mmio+SISR_RR) ;  /* Read & Reset sisr */ 
939
940         spin_lock(&olympic_priv->olympic_lock);
941
942         /* Hotswap gives us this on removal */
943         if (sisr == 0xffffffff) { 
944                 printk(KERN_WARNING "%s: Hotswap adapter removal.\n",dev->name) ; 
945                 spin_unlock(&olympic_priv->olympic_lock) ; 
946                 return IRQ_NONE;
947         } 
948                 
949         if (sisr & (SISR_SRB_REPLY | SISR_TX1_EOF | SISR_RX_STATUS | SISR_ADAPTER_CHECK |  
950                         SISR_ASB_FREE | SISR_ARB_CMD | SISR_TRB_REPLY | SISR_RX_NOBUF | SISR_ERR)) {  
951         
952                 /* If we ever get this the adapter is seriously dead. Only a reset is going to 
953                  * bring it back to life. We're talking pci bus errors and such like :( */ 
954                 if((sisr & SISR_ERR) && (readl(olympic_mmio+EISR) & EISR_MASK_OPTIONS)) {
955                         printk(KERN_ERR "Olympic: EISR Error, EISR=%08x\n",readl(olympic_mmio+EISR)) ; 
956                         printk(KERN_ERR "The adapter must be reset to clear this condition.\n") ; 
957                         printk(KERN_ERR "Please report this error to the driver maintainer and/\n") ; 
958                         printk(KERN_ERR "or the linux-tr mailing list.\n") ; 
959                         wake_up_interruptible(&olympic_priv->srb_wait);
960                         spin_unlock(&olympic_priv->olympic_lock) ; 
961                         return IRQ_HANDLED;
962                 } /* SISR_ERR */
963
964                 if(sisr & SISR_SRB_REPLY) {
965                         if(olympic_priv->srb_queued==1) {
966                                 wake_up_interruptible(&olympic_priv->srb_wait);
967                         } else if (olympic_priv->srb_queued==2) { 
968                                 olympic_srb_bh(dev) ; 
969                         }
970                         olympic_priv->srb_queued=0;
971                 } /* SISR_SRB_REPLY */
972
973                 /* We shouldn't ever miss the Tx interrupt, but the you never know, hence the loop to ensure
974                    we get all tx completions. */
975                 if (sisr & SISR_TX1_EOF) {
976                         while(olympic_priv->olympic_tx_status_ring[(olympic_priv->tx_ring_last_status + 1) & (OLYMPIC_TX_RING_SIZE-1)].status) { 
977                                 olympic_priv->tx_ring_last_status++;
978                                 olympic_priv->tx_ring_last_status &= (OLYMPIC_TX_RING_SIZE-1);
979                                 olympic_priv->free_tx_ring_entries++;
980                                 olympic_priv->olympic_stats.tx_bytes += olympic_priv->tx_ring_skb[olympic_priv->tx_ring_last_status]->len;
981                                 olympic_priv->olympic_stats.tx_packets++ ; 
982                                 pci_unmap_single(olympic_priv->pdev, 
983                                         le32_to_cpu(olympic_priv->olympic_tx_ring[olympic_priv->tx_ring_last_status].buffer), 
984                                         olympic_priv->tx_ring_skb[olympic_priv->tx_ring_last_status]->len,PCI_DMA_TODEVICE);
985                                 dev_kfree_skb_irq(olympic_priv->tx_ring_skb[olympic_priv->tx_ring_last_status]);
986                                 olympic_priv->olympic_tx_ring[olympic_priv->tx_ring_last_status].buffer=cpu_to_le32(0xdeadbeef);
987                                 olympic_priv->olympic_tx_status_ring[olympic_priv->tx_ring_last_status].status=0;
988                         }
989                         netif_wake_queue(dev);
990                 } /* SISR_TX1_EOF */
991         
992                 if (sisr & SISR_RX_STATUS) {
993                         olympic_rx(dev);
994                 } /* SISR_RX_STATUS */
995         
996                 if (sisr & SISR_ADAPTER_CHECK) {
997                         netif_stop_queue(dev);
998                         printk(KERN_WARNING "%s: Adapter Check Interrupt Raised, 8 bytes of information follow:\n", dev->name);
999                         writel(readl(olympic_mmio+LAPWWC),olympic_mmio+LAPA);
1000                         adapter_check_area = olympic_priv->olympic_lap + ((readl(olympic_mmio+LAPWWC)) & (~0xf800)) ;
1001                         printk(KERN_WARNING "%s: Bytes %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",dev->name, readb(adapter_check_area+0), readb(adapter_check_area+1), readb(adapter_check_area+2), readb(adapter_check_area+3), readb(adapter_check_area+4), readb(adapter_check_area+5), readb(adapter_check_area+6), readb(adapter_check_area+7)) ; 
1002                         spin_unlock(&olympic_priv->olympic_lock) ; 
1003                         return IRQ_HANDLED; 
1004                 } /* SISR_ADAPTER_CHECK */
1005         
1006                 if (sisr & SISR_ASB_FREE) {
1007                         /* Wake up anything that is waiting for the asb response */  
1008                         if (olympic_priv->asb_queued) {
1009                                 olympic_asb_bh(dev) ; 
1010                         }
1011                 } /* SISR_ASB_FREE */
1012         
1013                 if (sisr & SISR_ARB_CMD) {
1014                         olympic_arb_cmd(dev) ; 
1015                 } /* SISR_ARB_CMD */
1016         
1017                 if (sisr & SISR_TRB_REPLY) {
1018                         /* Wake up anything that is waiting for the trb response */
1019                         if (olympic_priv->trb_queued) {
1020                                 wake_up_interruptible(&olympic_priv->trb_wait);
1021                         }
1022                         olympic_priv->trb_queued = 0 ; 
1023                 } /* SISR_TRB_REPLY */  
1024         
1025                 if (sisr & SISR_RX_NOBUF) {
1026                         /* According to the documentation, we don't have to do anything, but trapping it keeps it out of
1027                                    /var/log/messages.  */
1028                 } /* SISR_RX_NOBUF */
1029         } else { 
1030                 printk(KERN_WARNING "%s: Unexpected interrupt: %x\n",dev->name, sisr);
1031                 printk(KERN_WARNING "%s: SISR_MASK: %x\n",dev->name, readl(olympic_mmio+SISR_MASK)) ;
1032         } /* One if the interrupts we want */
1033         writel(SISR_MI,olympic_mmio+SISR_MASK_SUM);
1034         
1035         spin_unlock(&olympic_priv->olympic_lock) ; 
1036         return IRQ_HANDLED;
1037 }       
1038
1039 static int olympic_xmit(struct sk_buff *skb, struct net_device *dev) 
1040 {
1041         struct olympic_private *olympic_priv=netdev_priv(dev);
1042         u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio;
1043         unsigned long flags ; 
1044
1045         spin_lock_irqsave(&olympic_priv->olympic_lock, flags);
1046
1047         netif_stop_queue(dev);
1048         
1049         if(olympic_priv->free_tx_ring_entries) {
1050                 olympic_priv->olympic_tx_ring[olympic_priv->tx_ring_free].buffer = 
1051                         cpu_to_le32(pci_map_single(olympic_priv->pdev, skb->data, skb->len,PCI_DMA_TODEVICE));
1052                 olympic_priv->olympic_tx_ring[olympic_priv->tx_ring_free].status_length = cpu_to_le32(skb->len | (0x80000000));
1053                 olympic_priv->tx_ring_skb[olympic_priv->tx_ring_free]=skb;
1054                 olympic_priv->free_tx_ring_entries--;
1055
1056                 olympic_priv->tx_ring_free++;
1057                 olympic_priv->tx_ring_free &= (OLYMPIC_TX_RING_SIZE-1);
1058                 writew((((readw(olympic_mmio+TXENQ_1)) & 0x8000) ^ 0x8000) | 1,olympic_mmio+TXENQ_1);
1059                 netif_wake_queue(dev);
1060                 spin_unlock_irqrestore(&olympic_priv->olympic_lock,flags);
1061                 return 0;
1062         } else {
1063                 spin_unlock_irqrestore(&olympic_priv->olympic_lock,flags);
1064                 return 1;
1065         } 
1066
1067 }
1068         
1069
1070 static int olympic_close(struct net_device *dev) 
1071 {
1072         struct olympic_private *olympic_priv=netdev_priv(dev);
1073         u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio,*srb;
1074         unsigned long t,flags;
1075
1076         DECLARE_WAITQUEUE(wait,current) ; 
1077
1078         netif_stop_queue(dev);
1079         
1080         writel(olympic_priv->srb,olympic_mmio+LAPA);
1081         srb=olympic_priv->olympic_lap + (olympic_priv->srb & (~0xf800));
1082         
1083         writeb(SRB_CLOSE_ADAPTER,srb+0);
1084         writeb(0,srb+1);
1085         writeb(OLYMPIC_CLEAR_RET_CODE,srb+2);
1086
1087         add_wait_queue(&olympic_priv->srb_wait,&wait) ;
1088         set_current_state(TASK_INTERRUPTIBLE) ; 
1089
1090         spin_lock_irqsave(&olympic_priv->olympic_lock,flags);
1091         olympic_priv->srb_queued=1;
1092
1093         writel(LISR_SRB_CMD,olympic_mmio+LISR_SUM);
1094         spin_unlock_irqrestore(&olympic_priv->olympic_lock,flags);
1095
1096         while(olympic_priv->srb_queued) {
1097
1098                 t = schedule_timeout_interruptible(60*HZ);
1099
1100                 if(signal_pending(current))     {            
1101                         printk(KERN_WARNING "%s: SRB timed out.\n",dev->name);
1102                         printk(KERN_WARNING "SISR=%x MISR=%x\n",readl(olympic_mmio+SISR),readl(olympic_mmio+LISR));
1103                         olympic_priv->srb_queued=0;
1104                         break;
1105                 }
1106
1107                 if (t == 0) { 
1108                         printk(KERN_WARNING "%s: SRB timed out. May not be fatal. \n",dev->name) ; 
1109                 } 
1110                 olympic_priv->srb_queued=0;
1111         }
1112         remove_wait_queue(&olympic_priv->srb_wait,&wait) ; 
1113
1114         olympic_priv->rx_status_last_received++;
1115         olympic_priv->rx_status_last_received&=OLYMPIC_RX_RING_SIZE-1;
1116
1117         olympic_freemem(dev) ;  
1118
1119         /* reset tx/rx fifo's and busmaster logic */
1120
1121         writel(readl(olympic_mmio+BCTL)|(3<<13),olympic_mmio+BCTL);
1122         udelay(1);
1123         writel(readl(olympic_mmio+BCTL)&~(3<<13),olympic_mmio+BCTL);
1124
1125 #if OLYMPIC_DEBUG
1126         {
1127         int i ; 
1128         printk("srb(%p): ",srb);
1129         for(i=0;i<4;i++)
1130                 printk("%x ",readb(srb+i));
1131         printk("\n");
1132         }
1133 #endif
1134         free_irq(dev->irq,dev);
1135
1136         return 0;
1137         
1138 }
1139
1140 static void olympic_set_rx_mode(struct net_device *dev) 
1141 {
1142         struct olympic_private *olympic_priv = netdev_priv(dev);
1143         u8 __iomem *olympic_mmio = olympic_priv->olympic_mmio ; 
1144         u8 options = 0; 
1145         u8 __iomem *srb;
1146         struct dev_mc_list *dmi ; 
1147         unsigned char dev_mc_address[4] ; 
1148         int i ; 
1149
1150         writel(olympic_priv->srb,olympic_mmio+LAPA);
1151         srb=olympic_priv->olympic_lap + (olympic_priv->srb & (~0xf800));
1152         options = olympic_priv->olympic_copy_all_options; 
1153
1154         if (dev->flags&IFF_PROMISC)  
1155                 options |= 0x61 ;
1156         else
1157                 options &= ~0x61 ; 
1158
1159         /* Only issue the srb if there is a change in options */
1160
1161         if ((options ^ olympic_priv->olympic_copy_all_options)) { 
1162         
1163                 /* Now to issue the srb command to alter the copy.all.options */
1164         
1165                 writeb(SRB_MODIFY_RECEIVE_OPTIONS,srb);
1166                 writeb(0,srb+1);
1167                 writeb(OLYMPIC_CLEAR_RET_CODE,srb+2);
1168                 writeb(0,srb+3);
1169                 writeb(olympic_priv->olympic_receive_options,srb+4);
1170                 writeb(options,srb+5);
1171
1172                 olympic_priv->srb_queued=2; /* Can't sleep, use srb_bh */
1173
1174                 writel(LISR_SRB_CMD,olympic_mmio+LISR_SUM);
1175
1176                 olympic_priv->olympic_copy_all_options = options ;
1177                 
1178                 return ;  
1179         } 
1180
1181         /* Set the functional addresses we need for multicast */
1182
1183         dev_mc_address[0] = dev_mc_address[1] = dev_mc_address[2] = dev_mc_address[3] = 0 ; 
1184
1185         for (i=0,dmi=dev->mc_list;i < dev->mc_count; i++,dmi = dmi->next) { 
1186                 dev_mc_address[0] |= dmi->dmi_addr[2] ; 
1187                 dev_mc_address[1] |= dmi->dmi_addr[3] ; 
1188                 dev_mc_address[2] |= dmi->dmi_addr[4] ; 
1189                 dev_mc_address[3] |= dmi->dmi_addr[5] ; 
1190         }
1191
1192         writeb(SRB_SET_FUNC_ADDRESS,srb+0);
1193         writeb(0,srb+1);
1194         writeb(OLYMPIC_CLEAR_RET_CODE,srb+2);
1195         writeb(0,srb+3);
1196         writeb(0,srb+4);
1197         writeb(0,srb+5);
1198         writeb(dev_mc_address[0],srb+6);
1199         writeb(dev_mc_address[1],srb+7);
1200         writeb(dev_mc_address[2],srb+8);
1201         writeb(dev_mc_address[3],srb+9);
1202
1203         olympic_priv->srb_queued = 2 ;
1204         writel(LISR_SRB_CMD,olympic_mmio+LISR_SUM);
1205
1206 }
1207
1208 static void olympic_srb_bh(struct net_device *dev) 
1209
1210         struct olympic_private *olympic_priv = netdev_priv(dev);
1211         u8 __iomem *olympic_mmio = olympic_priv->olympic_mmio ; 
1212         u8 __iomem *srb;
1213
1214         writel(olympic_priv->srb,olympic_mmio+LAPA);
1215         srb=olympic_priv->olympic_lap + (olympic_priv->srb & (~0xf800));
1216
1217         switch (readb(srb)) { 
1218
1219                 /* SRB_MODIFY_RECEIVE_OPTIONS i.e. set_multicast_list options (promiscuous) 
1220                  * At some point we should do something if we get an error, such as
1221                  * resetting the IFF_PROMISC flag in dev
1222                  */
1223
1224                 case SRB_MODIFY_RECEIVE_OPTIONS:
1225                         switch (readb(srb+2)) { 
1226                                 case 0x01:
1227                                         printk(KERN_WARNING "%s: Unrecognized srb command\n",dev->name) ; 
1228                                         break ; 
1229                                 case 0x04:
1230                                         printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n",dev->name);
1231                                         break ; 
1232                                 default:
1233                                         if (olympic_priv->olympic_message_level) 
1234                                                 printk(KERN_WARNING "%s: Receive Options Modified to %x,%x\n",dev->name,olympic_priv->olympic_copy_all_options, olympic_priv->olympic_receive_options) ; 
1235                                         break ;         
1236                         } /* switch srb[2] */ 
1237                         break ;
1238                 
1239                 /* SRB_SET_GROUP_ADDRESS - Multicast group setting 
1240                  */
1241
1242                 case SRB_SET_GROUP_ADDRESS:
1243                         switch (readb(srb+2)) { 
1244                                 case 0x00:
1245                                         break ; 
1246                                 case 0x01:
1247                                         printk(KERN_WARNING "%s: Unrecognized srb command \n",dev->name) ; 
1248                                         break ;
1249                                 case 0x04:
1250                                         printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n",dev->name); 
1251                                         break ;
1252                                 case 0x3c:
1253                                         printk(KERN_WARNING "%s: Group/Functional address indicator bits not set correctly\n",dev->name) ; 
1254                                         break ;
1255                                 case 0x3e: /* If we ever implement individual multicast addresses, will need to deal with this */
1256                                         printk(KERN_WARNING "%s: Group address registers full\n",dev->name) ; 
1257                                         break ;  
1258                                 case 0x55:
1259                                         printk(KERN_INFO "%s: Group Address already set.\n",dev->name) ; 
1260                                         break ;
1261                                 default:
1262                                         break ; 
1263                         } /* switch srb[2] */ 
1264                         break ; 
1265
1266                 /* SRB_RESET_GROUP_ADDRESS - Remove a multicast address from group list
1267                  */
1268
1269                 case SRB_RESET_GROUP_ADDRESS:
1270                         switch (readb(srb+2)) { 
1271                                 case 0x00:
1272                                         break ; 
1273                                 case 0x01:
1274                                         printk(KERN_WARNING "%s: Unrecognized srb command \n",dev->name) ; 
1275                                         break ; 
1276                                 case 0x04:
1277                                         printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n",dev->name) ; 
1278                                         break ; 
1279                                 case 0x39: /* Must deal with this if individual multicast addresses used */
1280                                         printk(KERN_INFO "%s: Group address not found \n",dev->name); 
1281                                         break ;
1282                                 default:
1283                                         break ; 
1284                         } /* switch srb[2] */
1285                         break ; 
1286
1287                 
1288                 /* SRB_SET_FUNC_ADDRESS - Called by the set_rx_mode 
1289                  */
1290
1291                 case SRB_SET_FUNC_ADDRESS:
1292                         switch (readb(srb+2)) { 
1293                                 case 0x00:
1294                                         if (olympic_priv->olympic_message_level)
1295                                                 printk(KERN_INFO "%s: Functional Address Mask Set \n",dev->name) ; 
1296                                         break ;
1297                                 case 0x01:
1298                                         printk(KERN_WARNING "%s: Unrecognized srb command \n",dev->name) ; 
1299                                         break ; 
1300                                 case 0x04:
1301                                         printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n",dev->name) ; 
1302                                         break ; 
1303                                 default:
1304                                         break ; 
1305                         } /* switch srb[2] */
1306                         break ; 
1307         
1308                 /* SRB_READ_LOG - Read and reset the adapter error counters
1309                  */
1310
1311                 case SRB_READ_LOG:
1312                         switch (readb(srb+2)) { 
1313                                 case 0x00: 
1314                                         if (olympic_priv->olympic_message_level) 
1315                                                 printk(KERN_INFO "%s: Read Log issued\n",dev->name) ; 
1316                                         break ; 
1317                                 case 0x01:
1318                                         printk(KERN_WARNING "%s: Unrecognized srb command \n",dev->name) ; 
1319                                         break ; 
1320                                 case 0x04:
1321                                         printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n",dev->name) ; 
1322                                         break ; 
1323                         
1324                         } /* switch srb[2] */
1325                         break ; 
1326                 
1327                 /* SRB_READ_SR_COUNTERS - Read and reset the source routing bridge related counters */
1328
1329                 case SRB_READ_SR_COUNTERS:
1330                         switch (readb(srb+2)) { 
1331                                 case 0x00: 
1332                                         if (olympic_priv->olympic_message_level) 
1333                                                 printk(KERN_INFO "%s: Read Source Routing Counters issued\n",dev->name) ; 
1334                                         break ; 
1335                                 case 0x01:
1336                                         printk(KERN_WARNING "%s: Unrecognized srb command \n",dev->name) ; 
1337                                         break ; 
1338                                 case 0x04:
1339                                         printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n",dev->name) ; 
1340                                         break ; 
1341                                 default:
1342                                         break ; 
1343                         } /* switch srb[2] */
1344                         break ;
1345  
1346                 default:
1347                         printk(KERN_WARNING "%s: Unrecognized srb bh return value.\n",dev->name);
1348                         break ; 
1349         } /* switch srb[0] */
1350
1351
1352
1353 static struct net_device_stats * olympic_get_stats(struct net_device *dev)
1354 {
1355         struct olympic_private *olympic_priv ;
1356         olympic_priv=netdev_priv(dev);
1357         return (struct net_device_stats *) &olympic_priv->olympic_stats; 
1358 }
1359
1360 static int olympic_set_mac_address (struct net_device *dev, void *addr) 
1361 {
1362         struct sockaddr *saddr = addr ; 
1363         struct olympic_private *olympic_priv = netdev_priv(dev);
1364
1365         if (netif_running(dev)) { 
1366                 printk(KERN_WARNING "%s: Cannot set mac/laa address while card is open\n", dev->name) ; 
1367                 return -EIO ; 
1368         }
1369
1370         memcpy(olympic_priv->olympic_laa, saddr->sa_data,dev->addr_len) ; 
1371         
1372         if (olympic_priv->olympic_message_level) { 
1373                 printk(KERN_INFO "%s: MAC/LAA Set to  = %x.%x.%x.%x.%x.%x\n",dev->name, olympic_priv->olympic_laa[0],
1374                 olympic_priv->olympic_laa[1], olympic_priv->olympic_laa[2],
1375                 olympic_priv->olympic_laa[3], olympic_priv->olympic_laa[4],
1376                 olympic_priv->olympic_laa[5]);
1377         } 
1378
1379         return 0 ; 
1380 }
1381
1382 static void olympic_arb_cmd(struct net_device *dev)
1383 {
1384         struct olympic_private *olympic_priv = netdev_priv(dev);
1385         u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio;
1386         u8 __iomem *arb_block, *asb_block, *srb  ; 
1387         u8 header_len ; 
1388         u16 frame_len, buffer_len ;
1389         struct sk_buff *mac_frame ;  
1390         u8 __iomem *buf_ptr ;
1391         u8 __iomem *frame_data ;  
1392         u16 buff_off ; 
1393         u16 lan_status = 0, lan_status_diff  ; /* Initialize to stop compiler warning */
1394         u8 fdx_prot_error ; 
1395         u16 next_ptr;
1396
1397         arb_block = (olympic_priv->olympic_lap + olympic_priv->arb) ; 
1398         asb_block = (olympic_priv->olympic_lap + olympic_priv->asb) ; 
1399         srb = (olympic_priv->olympic_lap + olympic_priv->srb) ; 
1400         
1401         if (readb(arb_block+0) == ARB_RECEIVE_DATA) { /* Receive.data, MAC frames */
1402
1403                 header_len = readb(arb_block+8) ; /* 802.5 Token-Ring Header Length */  
1404                 frame_len = swab16(readw(arb_block + 10)) ; 
1405
1406                 buff_off = swab16(readw(arb_block + 6)) ;
1407                 
1408                 buf_ptr = olympic_priv->olympic_lap + buff_off ; 
1409
1410 #if OLYMPIC_DEBUG
1411 {
1412                 int i;
1413                 frame_data = buf_ptr+offsetof(struct mac_receive_buffer,frame_data) ; 
1414
1415                 for (i=0 ;  i < 14 ; i++) { 
1416                         printk("Loc %d = %02x\n",i,readb(frame_data + i)); 
1417                 }
1418
1419                 printk("next %04x, fs %02x, len %04x \n",readw(buf_ptr+offsetof(struct mac_receive_buffer,next)), readb(buf_ptr+offsetof(struct mac_receive_buffer,frame_status)), readw(buf_ptr+offsetof(struct mac_receive_buffer,buffer_length))); 
1420 }
1421 #endif 
1422                 mac_frame = dev_alloc_skb(frame_len) ; 
1423                 if (!mac_frame) {
1424                         printk(KERN_WARNING "%s: Memory squeeze, dropping frame.\n", dev->name);
1425                         goto drop_frame;
1426                 }
1427
1428                 /* Walk the buffer chain, creating the frame */
1429
1430                 do {
1431                         frame_data = buf_ptr+offsetof(struct mac_receive_buffer,frame_data) ; 
1432                         buffer_len = swab16(readw(buf_ptr+offsetof(struct mac_receive_buffer,buffer_length))); 
1433                         memcpy_fromio(skb_put(mac_frame, buffer_len), frame_data , buffer_len ) ;
1434                         next_ptr=readw(buf_ptr+offsetof(struct mac_receive_buffer,next)); 
1435                 } while (next_ptr && (buf_ptr=olympic_priv->olympic_lap + swab16(next_ptr)));
1436
1437                 mac_frame->protocol = tr_type_trans(mac_frame, dev);
1438
1439                 if (olympic_priv->olympic_network_monitor) { 
1440                         struct trh_hdr *mac_hdr;
1441                         DECLARE_MAC_BUF(mac);
1442                         printk(KERN_WARNING "%s: Received MAC Frame, details: \n",dev->name);
1443                         mac_hdr = tr_hdr(mac_frame);
1444                         printk(KERN_WARNING "%s: MAC Frame Dest. Addr: %s\n",
1445                                dev->name, print_mac(mac, mac_hdr->daddr));
1446                         printk(KERN_WARNING "%s: MAC Frame Srce. Addr: %s\n",
1447                                dev->name, print_mac(mac, mac_hdr->saddr));
1448                 }
1449                 netif_rx(mac_frame);
1450                 dev->last_rx = jiffies;
1451
1452 drop_frame:
1453                 /* Now tell the card we have dealt with the received frame */
1454
1455                 /* Set LISR Bit 1 */
1456                 writel(LISR_ARB_FREE,olympic_priv->olympic_mmio + LISR_SUM);
1457
1458                 /* Is the ASB free ? */         
1459                 
1460                 if (readb(asb_block + 2) != 0xff) { 
1461                         olympic_priv->asb_queued = 1 ; 
1462                         writel(LISR_ASB_FREE_REQ,olympic_priv->olympic_mmio+LISR_SUM); 
1463                         return ;        
1464                         /* Drop out and wait for the bottom half to be run */
1465                 }
1466                 
1467                 writeb(ASB_RECEIVE_DATA,asb_block); /* Receive data */
1468                 writeb(OLYMPIC_CLEAR_RET_CODE,asb_block+2); /* Necessary ?? */
1469                 writeb(readb(arb_block+6),asb_block+6); /* Must send the address back to the adapter */
1470                 writeb(readb(arb_block+7),asb_block+7); /* To let it know we have dealt with the data */                
1471
1472                 writel(LISR_ASB_REPLY | LISR_ASB_FREE_REQ,olympic_priv->olympic_mmio+LISR_SUM);
1473                 
1474                 olympic_priv->asb_queued = 2 ; 
1475         
1476                 return ;        
1477                 
1478         } else if (readb(arb_block) == ARB_LAN_CHANGE_STATUS) { /* Lan.change.status */
1479                 lan_status = swab16(readw(arb_block+6));
1480                 fdx_prot_error = readb(arb_block+8) ; 
1481                 
1482                 /* Issue ARB Free */
1483                 writel(LISR_ARB_FREE,olympic_priv->olympic_mmio+LISR_SUM);
1484
1485                 lan_status_diff = olympic_priv->olympic_lan_status ^ lan_status ; 
1486
1487                 if (lan_status_diff & (LSC_LWF | LSC_ARW | LSC_FPE | LSC_RR) ) { 
1488                         if (lan_status_diff & LSC_LWF) 
1489                                         printk(KERN_WARNING "%s: Short circuit detected on the lobe\n",dev->name);
1490                         if (lan_status_diff & LSC_ARW) 
1491                                         printk(KERN_WARNING "%s: Auto removal error\n",dev->name);
1492                         if (lan_status_diff & LSC_FPE)
1493                                         printk(KERN_WARNING "%s: FDX Protocol Error\n",dev->name);
1494                         if (lan_status_diff & LSC_RR) 
1495                                         printk(KERN_WARNING "%s: Force remove MAC frame received\n",dev->name);
1496                 
1497                         /* Adapter has been closed by the hardware */
1498                 
1499                         /* reset tx/rx fifo's and busmaster logic */
1500
1501                         writel(readl(olympic_mmio+BCTL)|(3<<13),olympic_mmio+BCTL);
1502                         udelay(1);
1503                         writel(readl(olympic_mmio+BCTL)&~(3<<13),olympic_mmio+BCTL);
1504                         netif_stop_queue(dev);
1505                         olympic_priv->srb = readw(olympic_priv->olympic_lap + LAPWWO) ; 
1506                         printk(KERN_WARNING "%s: Adapter has been closed \n", dev->name) ; 
1507                 } /* If serious error */
1508                 
1509                 if (olympic_priv->olympic_message_level) { 
1510                         if (lan_status_diff & LSC_SIG_LOSS) 
1511                                         printk(KERN_WARNING "%s: No receive signal detected \n", dev->name) ; 
1512                         if (lan_status_diff & LSC_HARD_ERR)
1513                                         printk(KERN_INFO "%s: Beaconing \n",dev->name);
1514                         if (lan_status_diff & LSC_SOFT_ERR)
1515                                         printk(KERN_WARNING "%s: Adapter transmitted Soft Error Report Mac Frame \n",dev->name);
1516                         if (lan_status_diff & LSC_TRAN_BCN) 
1517                                         printk(KERN_INFO "%s: We are tranmitting the beacon, aaah\n",dev->name);
1518                         if (lan_status_diff & LSC_SS) 
1519                                         printk(KERN_INFO "%s: Single Station on the ring \n", dev->name);
1520                         if (lan_status_diff & LSC_RING_REC)
1521                                         printk(KERN_INFO "%s: Ring recovery ongoing\n",dev->name);
1522                         if (lan_status_diff & LSC_FDX_MODE)
1523                                         printk(KERN_INFO "%s: Operating in FDX mode\n",dev->name);
1524                 }       
1525                 
1526                 if (lan_status_diff & LSC_CO) { 
1527                                         
1528                                 if (olympic_priv->olympic_message_level) 
1529                                         printk(KERN_INFO "%s: Counter Overflow \n", dev->name);
1530                                         
1531                                 /* Issue READ.LOG command */
1532
1533                                 writeb(SRB_READ_LOG, srb);
1534                                 writeb(0,srb+1);
1535                                 writeb(OLYMPIC_CLEAR_RET_CODE,srb+2);
1536                                 writeb(0,srb+3);
1537                                 writeb(0,srb+4);
1538                                 writeb(0,srb+5);
1539                                         
1540                                 olympic_priv->srb_queued=2; /* Can't sleep, use srb_bh */
1541
1542                                 writel(LISR_SRB_CMD,olympic_mmio+LISR_SUM);
1543                                         
1544                 }
1545
1546                 if (lan_status_diff & LSC_SR_CO) { 
1547
1548                                 if (olympic_priv->olympic_message_level)
1549                                         printk(KERN_INFO "%s: Source routing counters overflow\n", dev->name);
1550
1551                                 /* Issue a READ.SR.COUNTERS */
1552                                 
1553                                 writeb(SRB_READ_SR_COUNTERS,srb);
1554                                 writeb(0,srb+1);
1555                                 writeb(OLYMPIC_CLEAR_RET_CODE,srb+2);
1556                                 writeb(0,srb+3);
1557                                 
1558                                 olympic_priv->srb_queued=2; /* Can't sleep, use srb_bh */
1559
1560                                 writel(LISR_SRB_CMD,olympic_mmio+LISR_SUM);
1561
1562                 }
1563
1564                 olympic_priv->olympic_lan_status = lan_status ; 
1565         
1566         }  /* Lan.change.status */
1567         else
1568                 printk(KERN_WARNING "%s: Unknown arb command \n", dev->name);
1569 }
1570
1571 static void olympic_asb_bh(struct net_device *dev) 
1572 {
1573         struct olympic_private *olympic_priv = netdev_priv(dev);
1574         u8 __iomem *arb_block, *asb_block ; 
1575
1576         arb_block = (olympic_priv->olympic_lap + olympic_priv->arb) ; 
1577         asb_block = (olympic_priv->olympic_lap + olympic_priv->asb) ; 
1578
1579         if (olympic_priv->asb_queued == 1) {   /* Dropped through the first time */
1580
1581                 writeb(ASB_RECEIVE_DATA,asb_block); /* Receive data */
1582                 writeb(OLYMPIC_CLEAR_RET_CODE,asb_block+2); /* Necessary ?? */
1583                 writeb(readb(arb_block+6),asb_block+6); /* Must send the address back to the adapter */
1584                 writeb(readb(arb_block+7),asb_block+7); /* To let it know we have dealt with the data */                
1585
1586                 writel(LISR_ASB_REPLY | LISR_ASB_FREE_REQ,olympic_priv->olympic_mmio+LISR_SUM);
1587                 olympic_priv->asb_queued = 2 ; 
1588
1589                 return ; 
1590         }
1591
1592         if (olympic_priv->asb_queued == 2) { 
1593                 switch (readb(asb_block+2)) {
1594                         case 0x01:
1595                                 printk(KERN_WARNING "%s: Unrecognized command code \n", dev->name);
1596                                 break ;
1597                         case 0x26:
1598                                 printk(KERN_WARNING "%s: Unrecognized buffer address \n", dev->name);
1599                                 break ;
1600                         case 0xFF:
1601                                 /* Valid response, everything should be ok again */
1602                                 break ;
1603                         default:
1604                                 printk(KERN_WARNING "%s: Invalid return code in asb\n",dev->name);
1605                                 break ;
1606                 }
1607         }
1608         olympic_priv->asb_queued = 0 ; 
1609 }
1610  
1611 static int olympic_change_mtu(struct net_device *dev, int mtu) 
1612 {
1613         struct olympic_private *olympic_priv = netdev_priv(dev);
1614         u16 max_mtu ; 
1615
1616         if (olympic_priv->olympic_ring_speed == 4)
1617                 max_mtu = 4500 ; 
1618         else
1619                 max_mtu = 18000 ; 
1620         
1621         if (mtu > max_mtu)
1622                 return -EINVAL ; 
1623         if (mtu < 100) 
1624                 return -EINVAL ; 
1625
1626         dev->mtu = mtu ; 
1627         olympic_priv->pkt_buf_sz = mtu + TR_HLEN ; 
1628
1629         return 0 ; 
1630 }
1631
1632 static int olympic_proc_info(char *buffer, char **start, off_t offset, int length, int *eof, void *data)
1633 {
1634         struct net_device *dev = (struct net_device *)data ; 
1635         struct olympic_private *olympic_priv=netdev_priv(dev);
1636         u8 __iomem *oat = (olympic_priv->olympic_lap + olympic_priv->olympic_addr_table_addr) ; 
1637         u8 __iomem *opt = (olympic_priv->olympic_lap + olympic_priv->olympic_parms_addr) ; 
1638         int size = 0 ; 
1639         int len=0;
1640         off_t begin=0;
1641         off_t pos=0;
1642         u8 addr[6];
1643         u8 addr2[6];
1644         int i;
1645         DECLARE_MAC_BUF(mac);
1646         DECLARE_MAC_BUF(mac2);
1647
1648         size = sprintf(buffer, 
1649                 "IBM Pit/Pit-Phy/Olympic Chipset Token Ring Adapter %s\n",dev->name);
1650         size += sprintf(buffer+size, "\n%6s: Adapter Address   : Node Address      : Functional Addr\n",
1651            dev->name); 
1652
1653         for (i = 0 ; i < 6 ; i++)
1654                 addr[i] = readb(oat+offsetof(struct olympic_adapter_addr_table,node_addr) + i);
1655
1656         size += sprintf(buffer+size, "%6s: %s : %s : %02x:%02x:%02x:%02x\n",
1657            dev->name,
1658            print_mac(mac, dev->dev_addr),
1659            print_mac(mac2, addr),
1660            readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)), 
1661            readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)+1),
1662            readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)+2),
1663            readb(oat+offsetof(struct olympic_adapter_addr_table,func_addr)+3));
1664          
1665         size += sprintf(buffer+size, "\n%6s: Token Ring Parameters Table:\n", dev->name);
1666
1667         size += sprintf(buffer+size, "%6s: Physical Addr : Up Node Address   : Poll Address      : AccPri : Auth Src : Att Code :\n",
1668           dev->name) ; 
1669
1670         for (i = 0 ; i < 6 ; i++)
1671                 addr[i] = readb(opt+offsetof(struct olympic_parameters_table, up_node_addr) + i);
1672         for (i = 0 ; i < 6 ; i++)
1673                 addr2[i] =  readb(opt+offsetof(struct olympic_parameters_table, poll_addr) + i);
1674
1675         size += sprintf(buffer+size, "%6s: %02x:%02x:%02x:%02x   : %s : %s : %04x   : %04x     :  %04x    :\n",
1676           dev->name,
1677           readb(opt+offsetof(struct olympic_parameters_table, phys_addr)),
1678           readb(opt+offsetof(struct olympic_parameters_table, phys_addr)+1),
1679           readb(opt+offsetof(struct olympic_parameters_table, phys_addr)+2),
1680           readb(opt+offsetof(struct olympic_parameters_table, phys_addr)+3),
1681           print_mac(mac, addr),
1682           print_mac(mac2, addr2),
1683           swab16(readw(opt+offsetof(struct olympic_parameters_table, acc_priority))),
1684           swab16(readw(opt+offsetof(struct olympic_parameters_table, auth_source_class))),
1685           swab16(readw(opt+offsetof(struct olympic_parameters_table, att_code))));
1686
1687         size += sprintf(buffer+size, "%6s: Source Address    : Bcn T : Maj. V : Lan St : Lcl Rg : Mon Err : Frame Correl : \n",
1688           dev->name) ; 
1689         
1690         for (i = 0 ; i < 6 ; i++)
1691                 addr[i] = readb(opt+offsetof(struct olympic_parameters_table, source_addr) + i);
1692         size += sprintf(buffer+size, "%6s: %s : %04x  : %04x   : %04x   : %04x   : %04x    :     %04x     : \n",
1693           dev->name,
1694           print_mac(mac, addr),
1695           swab16(readw(opt+offsetof(struct olympic_parameters_table, beacon_type))),
1696           swab16(readw(opt+offsetof(struct olympic_parameters_table, major_vector))),
1697           swab16(readw(opt+offsetof(struct olympic_parameters_table, lan_status))),
1698           swab16(readw(opt+offsetof(struct olympic_parameters_table, local_ring))),
1699           swab16(readw(opt+offsetof(struct olympic_parameters_table, mon_error))),
1700           swab16(readw(opt+offsetof(struct olympic_parameters_table, frame_correl))));
1701
1702         size += sprintf(buffer+size, "%6s: Beacon Details :  Tx  :  Rx  : NAUN Node Address : NAUN Node Phys : \n",
1703           dev->name) ; 
1704
1705         for (i = 0 ; i < 6 ; i++)
1706                 addr[i] = readb(opt+offsetof(struct olympic_parameters_table, beacon_naun) + i);
1707         size += sprintf(buffer+size, "%6s:                :  %02x  :  %02x  : %s : %02x:%02x:%02x:%02x    : \n",
1708           dev->name,
1709           swab16(readw(opt+offsetof(struct olympic_parameters_table, beacon_transmit))),
1710           swab16(readw(opt+offsetof(struct olympic_parameters_table, beacon_receive))),
1711           print_mac(mac, addr),
1712           readb(opt+offsetof(struct olympic_parameters_table, beacon_phys)),
1713           readb(opt+offsetof(struct olympic_parameters_table, beacon_phys)+1),
1714           readb(opt+offsetof(struct olympic_parameters_table, beacon_phys)+2),
1715           readb(opt+offsetof(struct olympic_parameters_table, beacon_phys)+3));
1716
1717         len=size;
1718         pos=begin+size;
1719         if (pos<offset) {
1720                 len=0;
1721                 begin=pos;
1722         }
1723         *start=buffer+(offset-begin);   /* Start of wanted data */
1724         len-=(offset-begin);            /* Start slop */
1725         if(len>length)
1726                 len=length;             /* Ending slop */
1727         return len;
1728 }
1729
1730 static void __devexit olympic_remove_one(struct pci_dev *pdev) 
1731 {
1732         struct net_device *dev = pci_get_drvdata(pdev) ; 
1733         struct olympic_private *olympic_priv=netdev_priv(dev);
1734
1735         if (olympic_priv->olympic_network_monitor) { 
1736                 char proc_name[20] ; 
1737                 strcpy(proc_name,"olympic_") ;
1738                 strcat(proc_name,dev->name) ;
1739                 remove_proc_entry(proc_name,init_net.proc_net);
1740         }
1741         unregister_netdev(dev) ; 
1742         iounmap(olympic_priv->olympic_mmio) ; 
1743         iounmap(olympic_priv->olympic_lap) ; 
1744         pci_release_regions(pdev) ;
1745         pci_set_drvdata(pdev,NULL) ;    
1746         free_netdev(dev) ; 
1747 }
1748
1749 static struct pci_driver olympic_driver = { 
1750         .name           = "olympic",
1751         .id_table       = olympic_pci_tbl,
1752         .probe          = olympic_probe,
1753         .remove         = __devexit_p(olympic_remove_one),
1754 };
1755
1756 static int __init olympic_pci_init(void) 
1757 {
1758         return pci_register_driver(&olympic_driver) ;
1759 }
1760
1761 static void __exit olympic_pci_cleanup(void)
1762 {
1763         pci_unregister_driver(&olympic_driver) ; 
1764 }       
1765
1766
1767 module_init(olympic_pci_init) ; 
1768 module_exit(olympic_pci_cleanup) ; 
1769
1770 MODULE_LICENSE("GPL");